50 . say in how many ways you can complete these sentences. 1) people cant live without . 2) people need to make our planet . 3) we would like to see our rivers and . 4) it is dangerous too . 5) there are a lot of things we can take from nature . 6) we pollute the environment when we . 7) people should always remember that . 8) lets make our country . 9) need our protection. 10) nowdays we should . 11) it is necessary to to live in a beautiful world.